Question

tan48 – cot42,Evaluate it.

Answer 1

$\bf { Hey \: there }$
Before evaluating let me give you a formula

$\bf{\cot( 90 - \theta) \: = tan \theta}$

$\bf so \: over \: here \: \\ \\ \bf tan \: 42 - \: cot48 \: \\ \\ \bf \: tan \: 42 - tan \: 42 \: ( \: since \: cot \: 90 - 42 = tan \: 42) \\ \bf \: = 0 \:$
$\bf \: @aishwary$

Answer 2

These are complementary angles

Therefore
tan48 - cot42
tan 48 - tan 48
Since cot (90 - theta ) = tan theta
tan48- tan 48
= 0

Hope this helps you

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